Thanks Emmanuel, perfectly clear.
The thing i was missing is the Registration Code,
i'am posting the replay from Lars for those who need it:
"Sorry, the Web site isn't yet really clear about this.
If you would like to stay at the Moevenpick Hotel then enter
"special" for the special hotel package (150 Euro discount)
or just enter "attendee" if you are planning to stay at a
you can apply to the TAC even if you aren't a committer. That does not guarantee that you will be selected and see your travel paid, though.
You just have to register here : http://tac-apply.apache.org/, then the apache travel committee will evaluate your request.
If you _don't_ need to get your travel and Apache Conference fee paid, you will just have to register using the standard web site. Doing so before feb. 6th, you will get a rebate.
Hope it helps !